<template>
  <view class="login-container">
    <uni-icons type="contact-filled" size="100" color="#AFAFAF"></uni-icons>
    <!-- 登录按钮 -->
    <button type="primary" class="btn-login" @click="getUserInfo" @getUserInfo="getUserInfo">一键登录</button>
    <!-- 登录提示 -->
    <view class="tips-text">登录后尽享更多权益</view>
  </view>
</template>

<script>
  import {
    mapMutations,
    mapState
  } from 'vuex'
  export default {
    name: "my-login",
    data() {
      return {
        loginResult: {
          "message": {
            "user_id": 12,
            "user_email_code": null,
            "is_active": null,
            "user_sex": "男",
            "user_qq": "",
            "user_tel": "",
            "user_xueli": "本科",
            "user_hobby": "",
            "user_introduce": null,
            "create_time": 1525402223,
            "update_time": 1525402223,
            "token": "Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1aWQiOjEyLCJpYXQiOjE1MjU0MDIyMjMsImV4cCI6MTUyNTQ4ODYyM30.g-4GtEQNPwT_Xs0Pq7Lrco_9DfHQQsBiOKZerkO-O-o"
          },
          "meta": {
            "msg": "登录成功",
            "status": 200
          }

        }
      };
    },
    computed: {
      // 调用 mapState 辅助方法，把 m_user 模块中的数据映射到当前用组件中使用
      ...mapState('m_user', ['redirectInfo']),


    },
    methods: {
      ...mapMutations('m_user', ['updateUserInfo', 'updateToken', 'updateRedirectInfo']),
      // getUserInfo(e) {
      //   if (e.detail.errMsg === 'getUserInfo:fail auth deny') return uni.$showMsg('您取消了登录授权！')
      //   // console.log(e.detail.userInfo)
      //   // 将用户信息存储到vuex
      //   this.updateUserInfo(e.detail.userInfo)
      //   this.getToken(e.detail)
      // },
      getUserInfo() {
        uni.getUserProfile({
          desc: '获取授权',
          success: res => {
            console.log(res)
            this.updateUserInfo(res.userInfo)
            this.getToken(res)
          },
          fail: err => {
            console.log(err)
          }
        })
      },

      async getToken(info) {
        const [err, res] = await uni.login().catch(err => err)
        if (err || res.errMsg !== 'login:ok') return uni.showError('登录失败!')
        const query = {
          code: res.code,
          encryptedData: info.encryptedData,
          iv: info.iv,
          rawData: info.rawData,
          signature: info.signature,
        }
        // 换取token
        const loginResult = this.loginResult
        if (loginResult.meta.status !== 200) return uni.$showMsg('登录失败！')
        uni.$showMsg('登录成功')

        // 2. 更新 vuex 中的 token
        this.updateToken(this.loginResult.message.token)

        // 判断vuex 中的redirectInfo 是否是null
        // 如果不为null ，登录成功之前，需要重新导航到对应的页面
        this.navigateBack()
      },
      navigateBack() {
        // redirectInfo 不为 null，并且导航方式为 switchTab
        if (this.redirectInfo && this.redirectInfo.openType === 'switchTab') {
          // 调用小程序提供的 uni.switchTab() API 进行页面的导航
          uni.switchTab({
            // 要导航到的页面地址
            url: this.redirectInfo.from,
            // 导航成功之后，把 vuex 中的 redirectInfo 对象重置为 null
            complete: () => {
              this.updateRedirectInfo(null)
            }
          })
        }
      }
    }
  }
</script>

<style lang="scss">
  .login-container {
    height: 750px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: #f8f8f8;
    position: relative;
    overflow: hidden;

    &::after {
      content: ' ';
      display: block;
      position: absolute;
      width: 100%;
      left: 0;
      bottom: 0;
      background-color: white;
      border-radius: 100%;
      transform: translateY(50%);
    }

    // 登录按钮的样式
    .btn-login {
      width: 90%;
      border-radius: 100px;
      margin: 15px 0;
      background-color: #c00000;
    }

    .tips-text {
      font-size: 12px;
      color: gray;
    }

  }
</style>
